Line an 8- or 9-inch square baking pan with foil. Spray foil lightly with nonstick cooking spray; set pan aside.
In a large saucepan heat honey until boiling. Stir in peanut butter until well blended.
Remove pan from heat and stir in granola, peanuts, and popcorn until coated. Press mixture evenly into prepared pan. Refrigerate until cool; cut into bars to serve. Makes 16 bars.